CN106785944B - A kind of three-phase coenosarc rigid gas insulated power circuit - Google Patents
A kind of three-phase coenosarc rigid gas insulated power circuit Download PDFInfo
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- CN106785944B CN106785944B CN201611140928.5A CN201611140928A CN106785944B CN 106785944 B CN106785944 B CN 106785944B CN 201611140928 A CN201611140928 A CN 201611140928A CN 106785944 B CN106785944 B CN 106785944B
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/202—Cable lay-outs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/063—Totally-enclosed installations, e.g. in metal casings filled with oil or gas
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Installation Of Bus-Bars (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The present invention relates to a kind of three-phase coenosarc rigid gas insulated power circuits, including straight section unit (2) and corner units；Each unit enclosure interior fills insulating gas, the shell of each unit passes through flanged joint, the conductor of each unit passes through fingertip grafting, corner units (3) include short section shell (34) and long piece housing (35), and fixed insulated support (36) and sliding insulated support (37) are equipped in long piece housing (35).The configuration of the present invention is simple is reliable, component standard, is applicable in various lines design scheme, flexible arrangement.It is adjusted and is arranged according to different installation environments, ease of assembly construction is compact-sized to occupy little space.
Description
Technical field
The present invention relates to high voltage power transmission technical field, especially a kind of three-phase coenosarc rigid gas insulated power circuit.
Background technology
Rigid gas insulated power circuit (GIL) is the insulation with certain pressure by being enclosed in inside metallic conduit
Gas provides the transmission facility of the power transmission unit and other insulation assemblies composition of current channel.
GIL has high reliability, service life length and transmittability as large capacity, high voltage, long distance transmission line
The advantages that strong.GIL is a kind of enclosed construction of metal rigidity, influenced by ambient atmosphere and environment it is smaller, also without external magnetic field
It influences.Inside uses SF6Or SF6And N2Mixed gas or compressed air are as dielectric, and good insulation preformance, dielectric loss is low,
Without problem of aging, no combustibility, reliability is high.The average life of GIL was at 50 years or more.The transimission power of GIL at present
Up to 4GW, ability to transmit electricity is strong.Advantageously reduce transmitting loop quantity.Using compact enclosed construction, take up an area more than overhead transmission line
It is small.Arrangement is flexible, can simplify system wiring, improves whole system power supply reliability.
GIL can usually encounter a variety of deployment scenarios in engineering design：Corner is more, and addition current branch, installation experiment are set
It is standby or introduce other accessory detection units need increase interface, transmission line of electricity by one time tap be twice, use three-phase coenosarc knot
Structure and overhead line, GIS device, transformer equipment and cable butting, many technical barriers such as long transmission line thermal deformation is big.In circuit
The smaller corridor position in space, rigid gas insulated power circuit (GIL) occupied space are big.
The change of GIL generatrix directions needs corner segments to complete.GIL is for non-90 degree right-angled bend casting or two at present
A right angle assembly is realized.Using casting elbow and two right angle assembly, in the line can not absorption equipment operation in heat expansion it is cold
The deformation that contracting generates, need to increase special thermal compensation device, structure is more complex.And thermal compensation device investment is big, short life, reliably
Property is poor, seriously affects the safe operation of entire busbar.
Invention content
To solve the above-mentioned problems, it reduces cost, improve line arrangement flexibility, the present invention proposes a kind of multiple-unit group
The three-phase coenosarc rigid gas insulated power circuit of conjunction.Concrete scheme is as follows：
A kind of three-phase coenosarc rigid gas insulated power circuit, including n straight section unit, each straight section unit include
Three straight conductors of the shell and setting of inside filling insulating gas inside housings, n >=1 further includes that m corner units are used for
Transmission line of electricity is set to change direction, each corner units include short section shell, long piece housing and three corner conductors, m >=1；
Wherein,
The one end open plane of the short section shell or long piece housing favours shell axis, the short section shell and long section
The plane of the opening that shell favours shell axis is adjacent and be fixedly connected, and makes the shell axis of the long piece housing and short section shell
With angle；
Each corner conductor is a conductor of the axis with bending angle, is mounted on short section shell and long piece housing
In, the axis bending angle of the corner conductor is identical as the long piece housing and the shell axis angle of short section shell；
The n straight section unit is connect with m corner units by flange two-by-two, and the conductor in each unit passes through fingertip two
Two grafting.
Further, fixed insulated support and sliding insulated support are equipped in the long piece housing, wherein fixed insulation
Support element is equipped with flange, is connect with adjacent cells close to corner, the both ends of corner units；Corner conductor passes through fixed insulation branch
Support member and sliding insulated support are mounted in short section shell and long piece housing.
Further, the shell axis angle of the long piece housing and short section shell of the corner units is 90 °~179 °.
Further, the long piece housing of the corner units and the plane of the opening for favouring shell axis of short section shell pass through
Grafting weldering connection, the junction is equipped with handle hole.
Further, further include a T-type unit be used in transmission line of electricity add current branch, install additional testing equipment or
Other auxiliary units are introduced, b branch units is for making transmission line of electricity separate three branch connection other equipments and c benefit
It repays unit and changes to realize that line build-out deflects for compensating the expanded by heating of transmission line of electricity straightway, wherein a >=0, b >=0, c
>=0, each unit enclosure interior fills insulating gas, and by flanged joint between the shell of each unit, the conductor in each unit is logical
Cross plug connection.
Further, including airtight insulating supporting, the airtight insulating supporting be mounted on the flange of two neighboring unit or
The opening of unit is used for installing conductor.
In the present invention, flexible corner unit is devised, the corner segments angle that can be needed according to the angle Selection needed for circuit
Degree keeps the design of GIL circuits more flexible.Corner units have larger flexibility simultaneously, can allow angle change ± 1.5 ° energy
Enough absorption circuits expand with heat and contract with cold and other errors.
The beneficial effects of the present invention are：
1, the configuration of the present invention is simple is reliable, component standard, is applicable in various lines design scheme, flexible arrangement.According to difference
Installation environment adjustment arrangement, ease of assembly construction are compact-sized to occupy little space.
2, corner units of the invention have larger flexibility using grafting soldering set, can permit angle change ± 1.5 °, turn
The flexible design at place can splice the deformation that welding structure realizes low-angle, the error in absorption circuit and deformation by shell.
3, the present invention can reduce flanged joint quantity, reduce airtight insulating supporting usage quantity, reduce sealing surface quantity, go
Except thermal compensation device.Leakage probability is reduced, circuit reliability of operation is promoted, saves project cost, optimizes engineering construction side
Case.
Description of the drawings
Fig. 1 is 2 schematic diagram of the embodiment of the present invention；
Fig. 2 is 3 schematic diagram of the embodiment of the present invention；
Fig. 3 is 4 schematic diagram of inventive embodiments；
Fig. 4 is static contact and moving contact grafting schematic diagram；
Fig. 5 is corner units schematic diagram；
Fig. 6 is T-type cell schematics；
Fig. 7 is branch units schematic diagram；
Fig. 8 is compensating unit schematic diagram；
Fig. 9 is straight section cell schematics；
Figure 10 is 1 schematic diagram of the embodiment of the present invention.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with the accompanying drawings, it should be noted that these are specific
Explanation only allow those of ordinary skill in the art to be more prone to, clearly understand the present invention rather than limitation of the invention solution
It releases
A kind of three-phase coenosarc rigid gas insulated power circuit, applicable voltage class are 66kV~330kV.
Embodiment 1：
As shown in Figure 10, a kind of three-phase coenosarc rigid gas insulated power circuit, including straight section unit 2 and corner units 3,
Each straight section unit 2 includes three straight conductors of the shell and setting of internal filling insulating gas inside housings.Corner units 3
Including short section shell 34, long piece housing 35 and three corner conductors 32.The quantity of straight section unit and corner units is according to construction need
Determine can there is multiple straight section units and corner units and the landform being laid with according to transmission line of electricity or the needs for adding port
Determine the quantity and distributing order of combination.I.e., it is possible to which n (n >=1) straight section units and m (m >=1) corner units are arranged, make
In, n straight section unit 2 is connect with m corner units 3 by flange two-by-two.Corner units are for making transmission line of electricity change side
To straight section unit is the basic unit in transmission line of electricity.The long piece housings 35 of corner units 3 and short section shell 34 favour shell
The plane of the opening of body axis is welded by grafting and is connected, and junction is equipped with handle hole.
As shown in figure 5, the one end open plane of short section shell 34 or long piece housing 35 favours shell axis, short section shell
34 favoured with long piece housing 35 shell axis plane of the opening it is adjacent and be fixedly connected, make the long piece housing and short section shell
Shell axis have angle.The shell axis angle of long piece housing and short section shell is 90 °~179 °.
Each corner conductor 32 is a conductor of the axis with bending angle, is mounted on short section shell 34 and long piece housing
In 35, the axis bending angle of corner conductor is identical as the long piece housing and the shell axis angle of short section shell.
Fixed insulated support 36 and sliding insulated support 37 are equipped in long piece housing 35, wherein fixed insulating supporting
Part 36 is equipped with flange, is connect with adjacent cells close to corner, the both ends of corner units 3；Corner conductor 32 is insulated by fixed
Support element 36 and sliding insulated support 37 are mounted in short section shell 34 and long piece housing 35
As shown in figure 9, straight section unit 2 is the basic unit of three-phase coenosarc rigid gas insulated power circuit, including straight shell
Body 21, straight conductor 22 (Fig. 9 can only see two phase conductors due to angle, actually three-phase conductor) and three-phase supporting insulator
26.Straight shell uses formed pipe, rolls welded pipe, helically welded tube, bending welded pipe or agitating friction welded pipe are made.Directly lead
Body is mounted on straight enclosure interior, with adjacent cells conductor grafting.Straight conductor is fixed on by three-phase supporting insulator in straight shell
Portion, to be fixedly connected or being slidably connected between three-phase supporting insulator and straight shell, there are two three inside a straight section unit
Phase supporting insulator, between three-phase supporting insulator and straight conductor by or bolt, welding, crimping is attached.
The three-phase coenosarc rigid gas insulated power circuit of the present invention can also include branch units.As shown in fig. 7, branch
Unit 1 include airtight insulating supporting 11, branch's shell 12 with flange and the conductor in branch units (Fig. 7 due to
Angle reason can only see two phase conductors, actually three-phase conductor), airtight insulating supporting is mounted in the opening of branch's shell, gas
Close insulating supporting is connect with conductor.Branch's shell includes main casing and three branch shells 13 being interconnected with main casing, branch
Road shell outer end opening, it is angled with main casing, usually 90 °.Branch units is separated on three-phase bus unit
Three branches connect other equipment.This three branches can be connect with single-phase busbar, convenient for the experiment of different branch, operation and event
Barrier investigation, and floor space is greatly reduced, keep installation more flexible reliable.
Branch conductors in branch units include straight conductor and curved conductor；Straight conductor be mounted on main casing in, curved conductor with
Axis is angled, and the angle and main casing are identical as the axis angle of branch's shell, and usually 90 °, curved conductor is mounted on
In branch shell.The arrangement of branch shell can also be distributed in main casing radial direction along main casing axial direction parallelly distribute on
Same section on.
Three-phase coenosarc GIL is branched into single-phase GIL, the equipment such as convenient and overhead line, GIS device, transformer by branch units
Connection.Or it is by GIL points of a three-phase coenosarc：An a time three-phase coenosarc GIL and receipt phase GIL, in these no demands,
Add cover plate for sealing at branch's shell nozzle.
As shown in figure 4, the conductor both ends in transmission line of electricity in each unit are respectively equipped with contact, connected two-by-two by contact
It connects.Conductor one end is static contact 33, passes through 31 grafting of fingertip with the moving contact of adjacent cells conductor；The other end is moving contact 33 ',
Pass through 31 grafting of fingertip with the static contact of adjacent cells conductor.
The three-phase coenosarc rigid gas insulated power circuit of the present invention can also include compensating unit.Compensating unit is for mending
The expanded by heating variation for repaying transmission line of electricity straightway, realizes line build-out deflection.As shown in figure 8, compensating unit 4 setting with benefit
Repay the corner of circuit vertical direction, including middle casing 42, two flanged (FLGD) bellowss 41, short flow 43, banking stops
44 and conductor, 42 both ends of middle casing a bellows 41 is fixedly mounted respectively, short stream is installed on the bellows 41
Piece 43 and banking stop 44.
The three-phase coenosarc rigid gas insulated power circuit of the present invention can also include T-type unit.T-type unit is used for defeated
Current branch is added in electric line, is installed testing equipment additional or is introduced other auxiliary units.As shown in fig. 6, T-type unit 5 includes T
Shell body 52 and conductor.T-type shell includes upper port 53, left port 54 and right output port 55, and airtight insulating supporting is mounted on port
On, conductor is mounted on airtight insulating supporting.
Airtight insulating supporting is mounted on the flange of two neighboring unit or the opening of unit, for installing conductor and protects
Demonstrate,prove the air-tightness of transmission line of electricity.
Each unit selects different units, any amount to combine according to configuration.That is, the three-phase coenosarc of the present invention
Rigid gas insulated power circuit can also include a T-type unit 5, use in addition to above-mentioned straight section unit and corner units
In adding current branch in transmission line of electricity, installing testing equipment additional or introducing other auxiliary units, b branch units 1 is used
Three branch connection other equipments and c compensating unit 4 are separated for compensating transmission line of electricity straightway in making transmission line of electricity
Expanded by heating variation is to realize that line build-out deflects, wherein a >=0, b >=0, c >=0, and each unit enclosure interior fills insulating gas,
By flanged joint between the shell of each unit, the conductor in each unit passes through plug connection.
Embodiment 2：
As shown in Figure 1, a kind of three-phase coenosarc rigid gas insulated power circuit, including straight section unit 2, branch units 1 turn
Angle unit 3, compensating unit 4 and T-type unit 5.The right output port 55 of T-type unit 5 is connect with one end of compensating unit 4, compensating unit 4
The other end connect with the short section shell 34 of corner units 3, long piece housing 35 is connect with 2 one end of straight section unit, straight section unit 2
The other end is connect with branch units 3.Each unit enclosure interior fills insulating gas, and the shell of each unit is by flanged joint, respectively
Conductor plug connection in unit.
Embodiment 3：
As shown in Fig. 2, a kind of three-phase coenosarc rigid gas insulated power circuit includes two straight section units 2, corner units
3, branch units 1, compensating unit 4 and T-type unit 5.One end of compensating unit 4 is connect with left port 54, the other end and corner list
The short section shell 34 of member 3 connects.The short section shell of corner units or the plane of the opening of long piece housing one end are tilted with shell axis
Angle is 60 °, then the axis angle of the short section shell and long piece housing that form corner units is 120 °, naturally it is also possible to according to need
It is arranged to other angles.The long piece housing 35 of corner units 3 is sequentially connected two straight section units 2, reconnects branch units 1.
Insulating gas is filled inside each unit.
Embodiment 4：
As shown in figure 3, a kind of three-phase coenosarc rigid gas insulated power circuit includes four straight section units 2, corner units
3, compensating unit 4 and T-type unit 5.The short section shell of corner units or the plane of the opening of long piece housing one end incline with shell axis
Oblique angle is 45 °, then the axis angle of the short section shell and long piece housing that form corner units is 90 °.Two straight section units 2 according to
Then secondary connection is connected with the upper port 53 of T-type unit 5, the left port 54 of compensating unit one end connecting T-shaped unit, the other end connects
The short section shell 34 of corner units 3 is connect, the long piece housing 35 of corner units is connect with two sequentially connected straight section units.Each list
First internal filling insulating gas, the corner units deflection angle is 90 °.
The three-phase coenosarc rigid gas insulated power circuit of the present invention, simple and reliable for structure, component standard are applicable in a variety of lines
Road design scheme, flexible arrangement.It is adjusted and is arranged according to different installation environments, ease of assembly construction is compact-sized to occupy little space.
Claims (5)
1. a kind of three-phase coenosarc rigid gas insulated power circuit, including n straight section unit (2), each straight section unit (2)
Three straight conductors of shell and setting including internal filling insulating gas inside housings, n >=1, which is characterized in that further include
For m corner units (3) for making transmission line of electricity change direction, each corner units (3) include short section shell (34), long section
Shell (35) and three corner conductors (32), m >=1；Wherein,
The one end open plane of the short section shell (34) and/or the long piece housing (35) favours shell axis, described short
Piece housing (34) is adjacent with the long piece housing (35) plane of the opening for favouring shell axis and is fixedly connected, and makes the long section
The shell axis of shell and the short section shell has angle；
Each corner conductor (32) be a conductor of the axis with bending angle, be mounted on the short section shell (34) and
In the long piece housing (35), the shell of the axis bending angle of the corner conductor and the long piece housing and the short section shell
Body axis angle is identical；The n straight section unit (2) is connect with the m corner units (3) by flange two-by-two, each unit
In conductor pass through fingertip grafting two-by-two；
Further include that a T-type unit (5) is used to add current branch in transmission line of electricity, installs testing equipment additional or introduce other
Auxiliary unit, the T-type unit (5) include T-type shell (52) and conductor, and T-type shell includes upper port (53), left port (54)
With right output port (55), airtight insulating supporting is mounted on port, and conductor is mounted on airtight insulating supporting；B branch units (1)
Other equipment is connected for making transmission line of electricity separate three branches, the branch units (1) includes airtight insulating supporting (11), band
The branch's shell (12) and the conductor in branch units for having flange；And c compensating unit (4) is for compensating power transmission line
The expanded by heating of road straightway changes to realize that line build-out deflects, the compensating unit (4) include middle casing (42), two
Flanged (FLGD) bellows (41), short flow (43), banking stop (44) and conductor；Wherein a >=0, b >=0, c >=0, each unit shell
Inside filling insulating gas, by flanged joint between the shell of each unit, the conductor in each unit passes through plug connection.
2. three-phase coenosarc rigid gas insulated power circuit according to claim 1, which is characterized in that the long piece housing
(35) fixed insulated support (36) and sliding insulated support (37) are equipped in, wherein the fixed insulated support (36)
Close to corner, the both ends of corner units (3) are equipped with flange, are connect with adjacent cells；The corner conductor (32) passes through described
Fixed insulated support (36) and the sliding insulated support (37) are mounted on the short section shell (34) and the long section shell
In body (35).
3. three-phase coenosarc rigid gas insulated power circuit according to claim 2, which is characterized in that the corner units
(3) the shell axis angle of the long piece housing (35) and the short section shell (34) is 90 °~179 °.
4. three-phase coenosarc rigid gas insulated power circuit according to claim 1, which is characterized in that the corner units
(3) plane of the opening for favouring shell axis of the long piece housing (35) and the short section shell (34) is welded by grafting to be connected
It connects, the junction is equipped with handle hole.
5. the three-phase coenosarc rigid gas insulated power circuit according to any one of claim 1-4, which is characterized in that packet
Airtight insulating supporting (11) is included, the airtight insulating supporting is mounted on the flange of two neighboring unit or the opening of unit,
For installing conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140928.5A CN106785944B (en) | 2016-12-12 | 2016-12-12 | A kind of three-phase coenosarc rigid gas insulated power circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140928.5A CN106785944B (en) | 2016-12-12 | 2016-12-12 | A kind of three-phase coenosarc rigid gas insulated power circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN106785944A CN106785944A (en) | 2017-05-31 |
| CN106785944B true CN106785944B (en) | 2018-10-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117096813A (en) * | 2022-05-12 | 2023-11-21 | 日立能源瑞士股份公司 | Bending unit and gas-insulated power transmission line |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203165635U (en) * | 2012-12-28 | 2013-08-28 | 浙江省电力设计院 | GIL (gas insulated metal enclosed transmission line) straight connecting line adopted by high-low voltage side of transformer |
| CN203026893U (en) * | 2012-12-29 | 2013-06-26 | 重庆博森电气（集团）有限公司 | Outlet unit of rigid gas insulated transmission line |
| FR3010583A1 (en) * | 2013-09-09 | 2015-03-13 | Alstom Technology Ltd | MONOPHASE CONDUCTOR MODULE AND SINGLE PHASE CONDUCTOR JUNCTION EQUIPPED WITH SAME |
| CN106129823A (en) * | 2016-06-21 | 2016-11-16 | 中国电力科学研究院 | Extra-high-voltage alternating current mixed gas GIL line segment and method for arranging |
| CN206211278U (en) * | 2016-12-12 | 2017-05-31 | 江苏安靠智能输电工程科技股份有限公司 | A kind of three-phase coenosarc rigid gas insulated power circuit |
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